. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . FXG. FULL .\ND CH.\RGIXG POSITION. auxiliary reservoir, charging up thelatter to the same pressure containedin the brake pipe. mitted to the brake cylinder in ser\-iceapplications, and hence why it is that theservice reduction is transmitted so 424 RAILWAY AND LOCOMOTIVE ENGINEERING September, 1906. quickly to the rear of a long train, ap-plying all brakes evenly and with auniform pressure. The service lap position is shown inFig. 4. The valves assume this posi-tion wht-n the auxilia
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . FXG. FULL .\ND CH.\RGIXG POSITION. auxiliary reservoir, charging up thelatter to the same pressure containedin the brake pipe. mitted to the brake cylinder in ser\-iceapplications, and hence why it is that theservice reduction is transmitted so 424 RAILWAY AND LOCOMOTIVE ENGINEERING September, 1906. quickly to the rear of a long train, ap-plying all brakes evenly and with auniform pressure. The service lap position is shown inFig. 4. The valves assume this posi-tion wht-n the auxiliary pressure re- forward brakes is what prevents theslack of long trains from running out,and the consequent breakitrg in two, ofthe train. Closing the feed port ( bringsabout a more uniform recharging ofthe throughout the FIG. 3. duces to the same amount as that inthe brake pipe, or equalize with it. thesame as with the ordinary triple. In Fig. 5 the parts are shown in whatis known as the retarded release posi-tion. The triple piston moves to. theright far enough, when the mainreservoir air flows rapidly into thebrake pipe, to close feed groove i,leaving feed port y open to the au.\il-iary, and thus checks the rechargingof the auxiliary reservoir; and the ex-haust cavity n in the slide valve is alsomoved to the right far enough to re-duce its opening considerably, andcause a slow escape of air from thebrake cylinder, thus retarding the re-lease of the brake. The spring on theslide valve end of the triple is com-pressed whenever brake pipe pressureis considerably higher than auxiliarypressure, but as soon as the auxiliaryis charged up nearly even with thebrake pipe, this spring will return allparts to their normal position, wherethe exhaust port in and the feed grooveJ will be wide open, as in Fig. 2. W
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
